Spring-trip for cultivator-shovels.



J. LANGENPELD.

SPRING TRIP FOR GULTIV ATOR SHOVBLS. APPL I0ATIOVN FILED MAY 22,1911.

Patented Dec. 5, 1911.

COLUMBIA PLANOGRAPH cu.. WASHINGTON. I). r.

LII

JOHN LANGENFELD, or sronx CITY, IOWA.

SPRING-TRIP FOR CULTIVATOR-SHOVELS.

Specification of Letters Patent.

Patented Dec. 5, 1911.

Application filed May 22, 1911. Serial No. 628,743.

To all whom it may concern:

Be it known that I, JOHN LANGENFELD, a citizen of the United States,residing at Sioux City, county of Woodbury, and State of Iowa, haveinvented certain new and useful Improvements in Spring-Trips forCultivator-Shovels, of which the following is a specification.

This invention relates to spring trips for cultivator shovels and hasfor its object the provision of a simple, strong and durable device ofthat character which will permit adjustments to set the shovel at theproper angle, position the spring trip in different relationships tothe, cultivator beam, look the shovel securely against release undernormal conditions, but permit instant release or tripping if anobstruction is encountered, and thus prevent breakage of the shovel, theparts automatically resetting themselves after the obstruction ispassed.

The invention is set forth fully hereinafter and the novel features arerecited in the appended claims.

In the accompanying drawings :Figure 1 is a side elevation, partially insection; Fig. 2, a detail section through the pivot of the trip and theengaging device on the trip and shank; Fig. 3, a cross section throughthe engaging device of the trip and shank; and Fig. 4:, a detailperspective of one of the washers and the corrugated or serrated part ofone of the arms of the shank.

The cultivator beam 1 is of ordinary construction, and to this beamthere is pivoted at 2, the shank for the shovel, which is shown at 3,these being secured together in any suitable manner, as by fastenings 1.The body 6 of the shank may be tubular or solid to give it strength, andit is provided with arms 7 lying on opposite sides of the beam 1 andpivoted-thereto at 2. The arms 7 have extensions 8 which are corrugatedon their outer faces at 9 and are provided with registering slots 10through which passes a bolt 11 having suitable washers and a nut andprovided with a spacing sleeve 12 which keeps the arms 8 apart and amplybraces them. Loose on the sleeve is a roller or bowl 13.

The trip 1 1 is provided with a bifurcation which straddles the lowerend of the beam 1 and is pivoted thereto by a pin 16 and held thereon bycotters 17 so that it cannot work loose. This trip is provided with anotch 18 rounded and shaped so that it is adapted to snugly yet easilyreceive the roller or bowl l3, and at its upper end it is provided witha hook 19 which is adapted to limit the distance the shovel may moverearwardly so as to prevent the parts from becoming detached. -A spring20 connects. j

the free end of the trip to a clamp 21 which is adjustable on thebeam 1. Preferably, a

screw-threaded tension bolt 22 is employed,

passing through a loop 23 on the clamp to enable the spring tension tobe adjusted according to circumstances.

' The adjustability of. the bolt 11 in the slots 10 and securement ofit, enables the shovel to be initially set for operation at any desiredangle. Preferably the washers on the bolt 11 are corrugated to engagethe corrugations 9 to secure the bolt against movement in the slots,once it has been adjusted.

Normally the roller or bowl 13 is disposed in the recess or notch 18 andthe tension of the spring maintains the shank and shovel in this lockedposition. When an obstacle is encountered, the pressure becomessufficiently great to overcome the tension of the spring and the bowl 13thereupon rides out of the notch 18 and along the inner edge of the trip14, its ultimate movement being limited by its engagementwith the heador shoulder 19, if the pressure is such as to cause it to swing backthat far. Whenthe obstacle is passed, the tension of the spring causesthe trip to act as a cam on the roller or bowl 13 and snaps the bowlback into the notch 18 for subsequent normal operation of the shovel.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a spring trip for cultivator shovels, the combination with acultivator beam or standard, of a shovel carrying shank pivoted thereto,a spring-actuated trip pivoted to the standard or beam and provided withan engaging member, and a member carried by the shank which is engagedwith said member to thereby retain the shank in normal position by thespring tension exerted on the trip, said spring-actuated trip beingdisposed in upright position so that on the release of the engagingmember the said member will bear against the trip as the shank movesfrom normal position,

shank to automatically re-set itself in normal position.

2. In a spring trip for cultivator shovels,

the combination with a cultivator beam or standard, of a shovel-carryingshank pivoted thereto, a shiftable member adapted to be secured atdifferent positions on said shank, and a spring-actuated trip pivoted tothe standard or beam and having a device adapted to :engage theadjustable member to lock the shank in normal position.

3. In a spring-actuated trip forcultivator shovels, the combination witha beam or standard, of a shovel-carrying shank having arms whicharedisposed on opposite sides of the beam or standard and pivotedthereto, said arms being provided with'slots, a bolt passing throughsaid slots and adapted for positioning and securement at differentpoints thereof, a trip pivoted to the beam or standard between the armsof the shank and provided with a notch to engage the and a springconnecting the free end of the trip with the standard or beam.

4. In a spring-actuated trip for cultivator shovels, the combinationwith a beam or standard, of a shovel-carrying shank having arms whichare disposed on opposite sides of the beam or standard and pivotedthereto, said arms being provided with slots, abolt passing through saidslots and adapted for positioning and securement at different point-sthereof, a trip pivoted to the beam orstandard between the arms of theshank and provided with a notch to engage the bolt aforesaid, said triphaving an upwardly extending part provided with a stop or head, a clampadjustably secured on the standard or beam, and a spring and tensionadjusting device connecting'the trip with the clamp.

In testimony whereof, I hereunto aflix my signature in presence of twoWitnesses.

JOHN LANGENFELD.

Witnesses:

A. V. CONVERSE, A. DOYLE.

Copies of this patentmay be obtained for ,five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

